1400265220 has 24 divisors (see below), whose sum is σ = 2941291584. Its totient is φ = 559966176.

The previous prime is 1400265143. The next prime is 1400265241. The reversal of 1400265220 is 225620041.

It is a junction number, because it is equal to n+sod(n) for n = 1400265191 and 1400265200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118417 + ... + 129703.

It is an arithmetic number, because the mean of its divisors is an integer number (122553816).

Almost surely, 2^1400265220 is an apocalyptic number.

1400265220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400265220 is an abundant number, since it is smaller than the sum of its proper divisors (1541026364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1400265220 is a wasteful number, since it uses less digits than its factorization.

1400265220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17499 (or 17497 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1400265220 is about 37420.1178512308. The cubic root of 1400265220 is about 1118.7595801641.

Adding to 1400265220 its reverse (225620041), we get a palindrome (1625885261).

The spelling of 1400265220 in words is "one billion, four hundred million, two hundred sixty-five thousand, two hundred twenty".